S2M-F080 Equivalent & Substitute Parts

Part Overview

The S2M-F080 is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. Manufactured by onsemi, this component is classified as not for new designs, indicating obsolescence or end-of-life status. Identification of equivalent and substitute parts is necessary to support existing designs, maintenance applications, and production continuity where this diode is currently specified.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	1	µA @ 1000 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C ~ 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S2M-F080 is determined by equivalence in the following critical parameters:

Voltage Rating: DC reverse voltage must equal or exceed 1000 V
Current Rating: Average rectified current must equal or exceed 2 A
Forward Voltage Drop: Maximum forward voltage at rated current must not exceed 1.15 V @ 2 A
Package Type: Surface mount DO-214AA (SMB) package required for mechanical and thermal compatibility
Reverse Recovery Time: Standard recovery characteristics (trr = 2 µs) acceptable
Reverse Leakage Current: Maximum 1 µA @ 1000 V
Temperature Range: Operating junction temperature range must support application requirements
Compliance: RoHS3 compliance and REACH unaffected status required

The SB2M-M3/52T from Vishay General Semiconductor - Diodes Division meets all substitution criteria and is classified as an active product, providing design continuity and long-term availability.

Parameter Comparison

Parameter	S2M-F080 (onsemi)	SB2M-M3/52T (Vishay)	Match Status
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	Equivalent
Current - Average Rectified (Io)	2 A	2 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	1.15 V @ 2 A	Equivalent
Reverse Recovery Time (trr)	2 µs	2 µs	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 1000 V	1 µA @ 1000 V	Equivalent
Package / Case	DO-214AA, SMB	DO-214AA, SMB	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature - Junction	-65°C ~ 150°C	-55°C ~ 150°C	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Not For New Designs	Active	Substitute Preferred

Engineering Selection Recommendations

The SB2M-M3/52T is a direct functional equivalent to the S2M-F080 across all critical electrical parameters. The substitute part offers the following advantages:

Active Product Status: The SB2M-M3/52T is classified as an active product, ensuring continued availability and manufacturing support, whereas the S2M-F080 is designated not for new designs.
Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.
Thermal Performance: The SB2M-M3/52T operates across a slightly narrower junction temperature range (-55°C to 150°C versus -65°C to 150°C). This difference is acceptable for applications operating within standard industrial temperature limits.
Electrical Equivalence: All primary electrical specifications—reverse voltage, forward current, forward voltage drop, and reverse recovery time—are identical between the two parts.
Package Compatibility: Both components use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with existing PCB designs.

Selection of the SB2M-M3/52T is appropriate for new production, design updates, and replacement applications where the S2M-F080 is currently specified.

Frequently Asked Questions (FAQ)

Q: Can the SB2M-M3/52T be used as a direct replacement for the S2M-F080 in existing designs?

A: Yes. The SB2M-M3/52T is electrically and mechanically equivalent to the S2M-F080. Both parts share identical voltage ratings (1000 V), current ratings (2 A), forward voltage characteristics (1.15 V @ 2 A), and package type (DO-214AA, SMB). No circuit modifications are required.

Q: What is the significance of the S2M-F080 being marked "Not For New Designs"?

A: This designation indicates that onsemi has discontinued or is phasing out the S2M-F080 for new product development. The SB2M-M3/52T, classified as an active product, is the recommended alternative for ongoing and future applications.

Q: Are there differences in the operating temperature ranges between these parts?

A: The S2M-F080 operates from -65°C to 150°C junction temperature, while the SB2M-M3/52T operates from -55°C to 150°C. For applications requiring operation below -55°C, the S2M-F080 may be necessary. For standard industrial applications, the SB2M-M3/52T is fully compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the S2M-F080 and SB2M-M3/52T are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Is the DO-214AA package the same as SMB?

A: Yes. DO-214AA and SMB refer to the same surface mount package type. Both designations are used interchangeably in the industry. The package dimensions and PCB footprint are identical.

Q: What is the difference in reverse recovery time specifications?

A: Both parts specify a reverse recovery time (trr) of 2 µs. The S2M-F080 is classified as standard recovery with >500 ns at >2 A, while the SB2M-M3/52T is standard recovery with >500 ns at >200 mA. Both meet standard recovery classification and are functionally equivalent for this parameter.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Both parts are classified as standard recovery diodes with identical reverse recovery times (2 µs). They are suitable for general-purpose rectification and moderate-frequency applications. For high-frequency switching applications requiring faster recovery, specialized fast-recovery or ultrafast diodes should be evaluated.

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